Pattern mechanism of looms.



0. L. OWEN.

PATTERN MECHANISM OF LOOMS.

APPLICATION rum) SEPT.2B, 1905.

Patented Jul 20, 1909.

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O. L. OWEN,

PATTERN MEGHANISM 0P LOOMS.

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928,278, Patented Ju1y 20, 1909.

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' Way v o. L. GWEN. PATTERN MECHANISM OF LOOMS.

APPLIGATIOH FILED 8EP'1.28, 1906.

mlmmmmmnx UNITED STATES PATENT OFFICE,

'OSCAR L. OWEN, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO WHITINMACHINE WORKS, OF WHITINSVILLE, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

PATTERN MECHANISM OF LOOMS.

To all whom it may concern:

Be it known that I, OSCAR L. OWEN, a citizen of the United States,residing at Whitinsville, in the county of \Vorcester and State ofMassachusetts, have invented certain new and useful Improvements inPattern Mechanisms of Looms, of which the following, taken inconjunction with the drawings which form a part hereof, is a full,clear, and concise specification.

The invention herein disclosed relates to improvements in patternmechanisms of looms which employ pattern controlling devices for boththe filling and the warp, and consists in th novel arrangement of thepattern chains for such purpose and in the con struction and dispositionof the means for driving the same and the connections of the partsoperated by them, as will be hereinafter described, whereby the entirepattern defining means of the loom is composed of few parts which occupysmall space on the loom frame, but is yet simple of comprehension andadapted to be readily inspected or manipulated by the ordinary weaver.

The invention also affords the advantage of being capable of applicationto existing looms without substantial change in their construction andcan be applied to the dobbies of fancy pattern looms in the firstinstance at low cost.

Referring to the accompanying drawings, which illustrate so much of aloom and 0rdinary dobby as is necessary for explaining my invention,Figure l is a side view in elevation of a dobby having my inventionapplied to it; Fig. 2 is a front view of Fig. 1, with parts broken awayfor convenience; Fig. 3 is an enlarged sectional detail of the chaindrum for the drop-box pattern; and Fig. 4: is a detail in plan of theoperating connections between the drop-box pattern chain and theindicator levers.

The dobby comprises, as usual, the two side frames A, A secured to theloom frame A, a part of which is shown in Fig. 1. The series of leversB, B is fulcrumed on the cross shaft A and said levers carry the jacklevers B which are supplied at their upper and lower ends with the jackhooks B The actuator arms C, mounted on thetransverse rock-shaft C,through their connections C reciprocate the knife bars C back and forthin the slots A of the frame, the actuator arms being driven in the usualman- Speeification of Letters Patent.

Application filed September 28, 1906.

Patented July 20, 1909 Serial No. 336,524.

nor by a connection rod (not shown) which is attached to the crank C inwell understood manner. The jack hooks B are selectively brought intoconnection with the reciprocating knife bars 0 under the call of thepattern, by means of their usual connections with the indicator levers,which levers are shown at D and are pivoted within the dobby frame sothat they rest upon or over the pattern chain E. This pattern chain iscarried by its drum E on the pattern shaft F and the latter protrudes atboth ends beyond the side frames A, A. The gear F 2 idly mounted on thepattern shaft is adapted to drive the shaft through the slip clutch Fwhich latter is of ordinary construction, held against the side of thegear by means of the helical spring F t which surrounds the shaft. Atits opposite end the shaft carries a hand-wheel F by means of which it,and the pattern chain, can be manually adjusted against the friction ofthe slip clutch.

In the operation of the foregoing parts certain of the indicator loversare lifted and certain of them left quiet, in accordance with thearrangement of the pegs 011 the pattern chain traveling beneath them,which causes the corresponding levers 13 to become coupled with thereciprocating knife bars C and thereby swung forwardly. The upper endsof the lovers are connected in the usual way with the harness mechanismof the looms and their forward movement therefore causes thepredetermined operation of the harnesses.

In accordance with my invention, certain of the levers, such as B, arenot intended to be brought into operation by the pattern chain E asabove described, although they may be so controlled if desired. Theselevers B have depending arms B extending below the fulcrum shaft A andinto engagement with one or more horizontal lifter levers G, G. Theselast mentioned levers are appropriately fulcrumed on a stationarybracket of the loom frame and are connected at their free ends with thelifter rods G, G, which latter are the usual means whereby the drop-boxmotion (not herein shown) is brought into place for shifting the shuttleboxes and thereby changing the filling pattern. The arms B engage withthe said levers by means of the rollers at their ends, which roll overthe curved cam surfaces of the levers, causing them to rock in avertical direction.

The indicating levers D, which correspond in position to the patternlevers B, B, although located in position where they might be actuatedby pegs in the pattern chain E as above mentioned, are connected foroperation by separate means located on the opposite or rear side of thedobby frame A. Such means comprise a second pattern chain H on a drum J,secured to the extended projecting end of the shaft F beyond the drivegear F and driven thereby through the slip clutch the same as the chainE. The two chain levers H, H or auxiliary indicator levers which arepivoted on the fixed stud A, extend over the chain H in position to beoperated by the pegs or protuberances thereon, and at their forward endsare turned in a lateral direction (Fig. at) around the front edge of thedobby frame to a point somewhat above the protruding ends of theindicator levers D above referred to, and to which they are respectivelyconnected by the links H The connecting levers H are of slightlydifferent proportions as shown, in order that they will not interfere.

The chain drum J is secured to the shaft F by its boss J and is recessedon its side nearest the dobby frame so that the spring and adjacentparts of the slip clutch F may be compactly housed within it. The insideof the drum J also forms the rear abutment of the spring.

In operation the shed pattern chain E and the drop-box pattern chain Hare driven in obvious manner by the same shaft, the former controllingthe warp pattern in the ordinary manner and the latter controlling thefilling pattern by means of the levers H and their connections with thelevers B, B as above described; but each can be separately made up andbe of different lengths, if desired, and in case of a mis-pick or anyother cause necessitating the turning back of the chains they may berotated by hand in unison and without confusion of the patterns byutilizing the hand-wheel F Having described my invention, what I claimand desire to secure by United States Letters Patent, is:

1. In a loom pattern mechanism a dobby comprising two uprightside-frames containing between them a series of upright oscillatorylevers formed for operative connection with the heddles and certain ofsaid levers having depending arms adapted for connection to the drop-boxmotion, and means for selectively operating said levers including apattern chain disposed between said s1de frames, a clutch-driven chainshaft therefor and a series of indicator levers engaged by said chain,in combination with a drum on said chain shaft adapted for carrying afilling pattern chain, and a second series of indicator levers operatedthereby and having connection with certain of the aforesaid indicatorlevers.

2. In a loom pattern mechanism, the combination with a series ofindicator levers having suitable connections for controlling the patternof the loom; and a drum adapted to carry a pattern chain for selectivelyoperating said levers, of auxiliary indicator levers connected tocertain of said first named levers and a separate pattern chain drum foroperating said auxiliary levers.

3. In a loom pattern mechanism, the combination with the loom dobbycomprising a series of chain levers and a pattern chain for defining theaction thereof, of the pattern shaft upon which said chain is carriedextended beyond the dobby frame, a second chain carried on the extendedend of said shaft, chain levers for said second chain, operatingconnections from said chain levers on the outside of the dobby frameconnected with certain of the chain levers within the frame and meansconnecting said last named levers to control the drop-box motion.

4:. In a loom pattern mechanism, the combination with the dobby frame,the harness levers and indicator levers thereof adapted to be operatedby a pattern chain of a filling pattern drum and auxiliary indicatorlevers therefor having their ends laterally turned toward said harnessindicator levers and connections between the latter and the said ends ofthe auxiliary indicator levers.

5. In a loom pattern mechanism, a pattern shaft and two pattern chaindrums secured thereto, in combination with a drive gear for said shaftlocated intermediate of said drums and idly mounted thereon, a frictionclutch for connecting said harness gear and shaft and a spring for saidclutch housed within one of said pattern chain drums.

In testimony whereof, I have signed my name to the specification in thepresence of two subscribing witnesses.

OSCAR L. OWVEN.

Witnesses HARMON O. NELsoN, J osnrrr B. ADAMS.

